river rising on the Malawi–Zambia border, southern Africa. From its source near Isoka, Zambia, it flows 500 miles (800 km) south-southwest, skirting the Muchinga Mountains to join the Zambezi River between Luangwa (formerly Feira), Zambia, and Zumbo, Mozambique. The river valley is the site of several game parks. Along its lower course the Luangwa forms part of the Zambia–Mozambique border.